This research explores algorithms for signal reconstruction in the time-of-flight detector, aiming to enhance particle identification and reduce systematic uncertainty.
The T2K ND280 upgrade aims to reduce the systematic uncertainty of the CP-violating phase, δCP, to reject non-CP violation hypothesis at $3σ$ confidence level. A crucial component of the ND280 upgrade, alongside the Super Fine Grained Detector (SuperFGD) and two High-Angle Time Projection Chambers (TPCs), is the Time-of-Flight (ToF) detector, which significantly enhances background rejection and particle identification capabilities. The ToF detector features six modules in a cube configuration, each with 20 plastic scintillator bars measuring 220×12×1\,cm³ and is equipped with Silicon Photomultiplier (SiPM) arrays at both ends to capture scintillation light. This letter outlines the modelling of the detector response and the signal reconstruction process.
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Alt et al. (2025) studied this question.
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